hillman



(No Model.) '6 Sheets-Sheet 1..

W. HILLM AN.

APPARATUS FOR DRILLING SPOKE HOLES IN FELLIES.

gented Aug. 11, 1891.

m: moms Penn: co, mm'D-uma, WASHINGTON, n. c.

(No Model.) 6 SheetsSh ee t 3.

I W. HILLMAN. APPARATUS FOR DRILLING SPOKE HOLES IN FELLIES.

Patented Aug. 11, 1891.

(No Model.) 6 Sheets-Sheet 4.

W. v HILLMAN. APPARATUS FOR DRILLING SPOKE HOLES-IN FELLIES. No.457,718.

Patented .Aug. 11, 1891.

(No Model.) 6 Sheetsheet 5.

W. HILLMAN. APPARATUS FOR DRILLING SPOKE HOLES IN FELLIES. No. 457,718.Patented Aug. 11, 1891.

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(No Model.) 6 Sheets--Sheet 6 W. HILLMAN. APPARATUS FOR DRILLING SPOKEHOLES IN PELLIES.

Patented Aug. 11, 1891.

UNITED STATES PATENT OFFICE.

WILLIAM HILLMAN, OFCOVENTRY, ENGLAND.

APPARATUS FOR DRlLLlNG'SPOKE-HOLES IN FELLIES.

SPECIFICATION forming part ,of Letters Patent No. 457,718, dated August11, 1891.

Application filed September 5, 1890. Serial No. 363,993. (No model.)

To all whom it may concern:

Be it known that 1, WILLIAM HILLMAN, a subject of the Queen of GreatBritain, residing at Coventry, in the county of \Varwick, England,haveinvented certain new and useful Improvements in Machinery or Apparatusfor Drilling Spoke-Holes in the Fellies of Velocipede and such likeWheels, of which the following is a specification, reference being hadto the accompanying drawings, and to the letters marked thereon.

The invention has for its object improvements in machinery or apparatusfor drilling the spoke-holes in the fellies of velocipede and such likewheels.

In the accompanying drawings, Figure l is a front elevation, and Fig. 2is a plan,'of a felly-drilling machine constructed according to myinvention. Fig. 3 is a back elevation, Fig.4 is a side elevation, andFig. 5 is a plan, of the dividing apparatus used therein. Fig. 6 is afront elevation, and Fig. 7 is a section, of the telly-carrier. Fig. 8is a sectional elevation of one of the head-stocks with its spindlecarrying a drilling-tool. Fig. 9 is a back view of same. Figs. 10 and 11are side views of brackets forming parts of frame-Work, showing slotsfor permitting adjustment of the beds of the boring-spindle head-stocks.Fig. 12 is a development of the cam e, and Fig. 13 is a development ofthe cam 61*.

In all the figures like parts are indicated by similar letters ofreference.

The machine is provided with a back driving-shaft a, which is mountedin-bearings 1), formed in or carried by brackets b of the framing. Onone end of this shaft a, is fixed a chain-wheel a, which by means of achain gives motion to another chain-wheel c, mounted loosely on thecam-shaft c, and which by the following arrangement of gearing givesmotion to said cam-shaft: The chain-wheel o is fixed to a toothed pinion0 which gives motion to a toothed wheel 0 and its connected toothedpinion c, mounted loosely on the fixed stud or pin and said toothedpinion 0 gives motion to the toothed wheel 0 fixed on the cam-shaft 0.means of two pulleys a a fixed thereon, aided by straps or hands, one ofwhich is crossed, also gives motion to two head-stock The backdriving-shaft a, by

spindles d e, carryingthe drilling-tools f. The fellyz is mounted andfixed on an adjustable chuck or carrier fixed at one end of acarrying-spindle g, the opposite end of which has fixed thereon adriving and holding disk 9 which is formed with a number of openings orrecesses in its periphery similar to a dividingplate, to enable the sameto be rotated at the required times through a certain portion of arevolution and then to be held firmly while the drilling is effected.This step-bystep motion to the carrier-spindle g is given by means of acam g on the cam-shaft 0, operating a lever g, which by a link gopcrates a driving-lever g provided with a pawl 9 acting in combinationwith the recesses in the dividing plate or disk 9 a spring 9 acting uponsuch latter lever in the contrary direction For convenience the partsare arranged so that the cam g shall carry the driving-lever g backward,and the spring 9 shall give it the forward or feed motion; but, ifdesired, the reverse arrangement can be adopted. After thecarrier-spindle g has been rotated, as above described, a latchconsisting of a tooth 2" on one end of a holdinglever '2 operated by aearn 1? on the cam-shaft o and by a spring, is caused to enter one ofthe openings or recesses in the dividing disk or plate 9 and therebysecurely hold it, and consequently the telly 2, while the drilling isbeing efiected. The action of the cam 2' and spring is such that theholding-lever 2' is removed from the dividing disk or plate 9immediately before the latter is moved by the feed-lever, while directlyafter such feed action the holding-leveri is again caused to engage withthe notched edge of the dividing plate or disk 9 The adjustable chuck orcarrier is in the formof a wheel 9 provided with a number of radialsockets g fitted with sliding rods g, which at their outer ends areformed with V or other suitably shaped recesses to receive the telly Theinner ends of these sliding rods g are by links g connected to a disk g,which is capable of rotation in relation to the carrier wheel or chuck gand consequently of causing the sliding carrier-rods g to protrude agreater or less distance through the sockets g to securely hold thetelly, and of Withdrawing the same to release the felly z therefrom. Thesaid disk 9 is provided with a hand-lever g, by which it can be turned,

and with a set screw or screws, to enable it to.

be readily fixed and released, as required.

To place a felly on the carrier, the sliding carrier-rods g are firstdrawn inward by rotating the operating-disk 9 The felly is then placedaround theirhollowed ends. They are then slid outward until the fellyfits tightly thereon, after which the disk is securely fixed inposition.

The drilling-spindles d e are mounted in sliding head-stocks d e,separated the requiredidistance from each other to admit the fellybetween them, and which are capable of movement to and fro on short beds(1 e fixed on the main bed j of the machine, with capability ofadjustment thereon in a transverse direction, so as to enable the saiddrillingspindles cl 6 to be adjusted, as may be required, by means ofbolts passing through the slots 12 in the brackets b. The felly-carrieris placed at such an angle in relation to the drilling-slides orhead-stocks d e as to cause the holes to be drilled at the requiredinclination, one hole being drilled on one side of the felly whileanother is being drilled on the opposite side thereof.

The sliding head-stocks d e are each fitted with a truck or roller (1 or6 which is acted upon by a cam d or e fixed on the cam-shaft c to givethe necessary forward and backward motions to the drills f, as required,for drilling the holes and for permitting the rotating of the felly 2between the drilling motions. Springs 01 e are employed to keep the saidtrucks or rollers d 6 up to their cams.

I prefer to arrange the drilling head-stocks d 6 parallel to thedriving-shaft a, and to mount the felly-carrier and driving-spindle g atsuch an inclination as to cause the drills f to enter the flanges of thehubs at the required angle; but, if desired, the reverse arrangement maybe adopted-that is to say, the drilling head-stocks may be mounted atinclinations with the driving-shaft, and the felly-carrier anddriving-spindle 9 maybe mounted at right angles with such shaft.

The driving-pulley a is loose on the shaft 61-, and it is fitted withfriction-segments operated by a sliding clutch a and lever a to fix itto or release it from the shaft a in the manner now well understood.

In using the .machine holes diametrically opposite are drilledsimultaneously. The chuck then revolves a distance of two holes, and soon until half the holes in the felly are drilled-2. 6., every alternateholeafter which, Without any rearrangement, the intermediate holes-thosemissed on the first revolution of the chuck-are drilled. This method ofWorking is adopted whena wheel has such a number of spokes as whendivided by two will yield an odd number. YVhen, however, a wheel isrequired to have such a number of J reverse angle.

spokes as when divided by two willyield an even number, the followingmethod of working is adopted: Intermediate holes around the entirecircumference of the felly are first drilled at a suitable angle, andthen the felly is removed from the carrier or holder and refixed thereonin reversed position to enable the remainder of the holes to be drilledat the If it is desired to drill the holes in the felly in a centralplane, the felly holder or carrier can be fixed at right angles with thedrill-spindle, and the drills fixed in a line with each other, in whichcase each hole can be drilled in succession at one fixing of the felly.

The machinery or apparatus herein described may be fitted with aself-acting stop mechanism of any suitable character, which when thefelly has during the drilling operation been caused to make a completerevolu tion Will stop the motion of the machine.

In my application, Serial No. 363,994, of same date herewith, I haveshown and described a machine particularly adapted for drillingspoke-holes in the hubs of bicyclewheels, and in such application I havespecifically claimed the hub-carrier.

\Vhat I claim as my invention, and desire to secure by Letters Patent.is-

1. In machinery for drilling the spoke-h oles in thefellies ofvelocipedeand such like wheels, the combination and arrangement ofdrills acting on opposite sides of the felly, sliding head-stockscarrying such drills, cams and springs for giving to-and-fro motion tosuch head-stocks, a felly-carrier fitted with a dividing-plate, drivingmechanism, and lever for holding and releasing the dividing-plate, andcams and springs for operating such driving mechanism and holding andreleasing lever, substantially as herein shown and described.

2. In machinery fordrilling the spoke-holes in the fellies ofvelocipedeand such like wheels, the combination and arrangement ofdrills acting on opposite sides of the felly, with a felly-carrieradjustably fixed between such drills, and the spindle on which saidcarrieris mounted, the drills being arranged at difierent anglesrelative to said spindle, substantially as herein shown and described.

3. In machinery for drilling the spoke-holes in thefellies ofvelocipedeand such likewheels, the felly-carrier consisting of a wheelfixed on the carrier-spindle, radial sockets fixed to such wheel,sliding rods working in such sockets, V or other shaped recesses at theends of such rods to receive the felly, links connecting the inner endsof such rods to adisk, a lever fixed to such disk for partially rotatingthe same, and screws or bolts for fixing the disk, substantially asherein shown and described.

4. In a machine for boring spoke-holes, the combination, with a carrierfor holding the article to be drilled, of two drill-spindles arranged atdiiferent angles relative to the axis of the carrier, wherebyspoke-holes may be IIR bored simultaneously at different inclinations,substantially as set forth.

5. In a machine for boring spoke-holes, the combination, with a carrierfor holding the article to be drilled and the spindle on which saidcarrier is mounted, of two drill-spindles arranged at different anglesrelative to the carrier-spindle, whereby spoke-holes may be boredsimultaneously at different inclinations, and cams for reciprocatingsaid drillspindles, substantially as set forth.

6. In a machine for boring spoke-holes, the combination of theadjustable carrier and the longitudinally-movable transversely adjustable drill-spindles, substantially as set forth.

7. In a machine for boring spoke-holes, the combination, with thecarrier for holding the article to be drilled, of the twotransverselyadjustable drill-spindles arranged at diflerent anglesrelative to the axis of the carrier,

whereby spoke-holes may be drilled simultaneously at differentinclinations.

' 8. In a boring-machine, the combination, with a drill-spindle and therevoluble carrier, of a dividing-plate for rotating said carrier, alatch for locking, and means for rotating said plate, substantially asset forth.

9. In a' boring-machine, the combination, with thetransversely-adjustable drill-spindles, of the revoluble carrier, thedividingplate for rotating said carrier, a latch for locking said platein position, a pawl for rotating said plate, and cams for operating saidlatch and pawl, substantially as set forth.

WILLIAM HILLMAN.

V Witnesses:

FREDERICK BAXTER, G. PEARSALL LOCKER.

